Link: AVG 9.0 Free (for personal use) - Provides antivirus, antispyware, rootkit protection and email scanning,  with automatic updating (scroll down and click on the AVG Free link).

Link: Malwarebytes' Anti-Malware - The free version is an excellent tool for removing infections that are already active. It must be manually updated before using it each time. The free version is not 24/7 protection. Note that some virus infections are smart enough to block its installation / execution. If that's the case, you will likely need professional help cleaning up. The paid version offers full time protection.

Link: Mozilla Firefox 3.6 - Free alternative browser to Internet Explorer. Scroll down and click on "Watch the Video" to see a 2-minute highlight.

Link: CCleaner - Free utility to delete temporary system and Internet files. Depending on the settings, it will also delete cookies, recently used file lists, and other personal history, so be careful and change the settings when you first open it. It will remember the custom settings you make.

Link:  1&1 Internet  Excellent email and web hosting services.